Originally posted by dan deutekom
I think we have discussed corn, corn meal and corn gluten meal in great length. I have also tried it. My non scientific opinion is that for me it is:
1: expensive and bulky to apply
2: timing is everything for it to have any sort of control of weeds (unfortunately there are not enough hours in the day to apply this material in the right timing on my lawns)
3: does nothing to eliminate existing weeds
4: has not shown to me any noticeable decrease in fungus problems
5: as a fertilizer it is slow to react
1: Agreed that commercial branded organic fertilizers are expensive. If your state limits you to applying only the commercial branded and tested fertilizers, you're stuck. If you are allowed by state rules to apply pure corn meal or alfalfa as soil amendments, you should be okay to save a considerable amount on materials. I also agree that organic materials are bulky. It takes 50 pounds of organics to cover 5,000 square feet versus 15 pounds of Lesco synthetic.
2: Agreed, as with all preemergents, timing is everything.
3: Agreed as with other preemegents.
4: It works for me and is working for many, many others. One factor in the application that will prevent it from working is the prior application of fungicides. If there is no living Trichoderma fungus in the soil, the corn meal will have nothing to draw on.
5: Agreed. The work around for that is to apply 3 weeks earlier than you might have otherwise.
Thanks y'all for not turning this into a free for all. My last post was antagonistic but nobody lowered themselves to rebut. Thanks!!